CMake/Modules/BasicConfigVersion-SameMajorVersion.cmake.in
2011-08-05 23:01:07 +02:00

42 lines
1.5 KiB
CMake

# This is a basic version file for the Config-mode of find_package().
# It is used by WriteBasicConfigVersionFile.cmake as input file for configure_file()
# to create a version-file which can be installed along a config.cmake file.
#
# The created file sets PACKAGE_VERSION_EXACT if the current version string and
# the requested version string are exactly the same and it sets
# PACKAGE_VERSION_COMPATIBLE if the current version is >= requested version,
# but only if the requested major version is the same as the current one.
# The variable CVF_VERSION must be set before calling configure_file().
set(PACKAGE_VERSION "@CVF_VERSION@")
if("${PACKAGE_VERSION}" VERSION_LESS "${PACKAGE_FIND_VERSION}" )
set(PACKAGE_VERSION_COMPATIBLE FALSE)
else()
if("@CVF_VERSION@" MATCHES "^([0-9]+)\\.")
set(CVF_VERSION_MAJOR "${CMAKE_MATCH_1}")
else()
set(CVF_VERSION_MAJOR "@CVF_VERSION@")
endif()
if("${PACKAGE_FIND_VERSION_MAJOR}" STREQUAL "${CVF_VERSION_MAJOR}")
set(PACKAGE_VERSION_COMPATIBLE TRUE)
else()
set(PACKAGE_VERSION_COMPATIBLE FALSE)
endif()
if( "${PACKAGE_FIND_VERSION}" STREQUAL "${PACKAGE_VERSION}")
set(PACKAGE_VERSION_EXACT TRUE)
endif()
endif()
# check that the installed version has the same 32/64bit-ness as the one which is currently searching:
if(NOT "${CMAKE_SIZEOF_VOID_P}" STREQUAL "@CMAKE_SIZEOF_VOID_P@")
math(EXPR installedBits "@CMAKE_SIZEOF_VOID_P@ * 8")
set(PACKAGE_VERSION "${PACKAGE_VERSION} (${installedBits}bit)")
set(PACKAGE_VERSION_UNSUITABLE TRUE)
endif()